现在完成进行时.ppt

文档介绍：revison
I started teaching English in 2011
I am teaching English now.
When did you start class today?
I started class at 9.
I am having class now.
现在完成进行时
----选自人教版八年级英语下册第六单元
兴国县方太中学
曾丹
Revision
did you start class?
2. I started class at 9.
3. I am still having class now.
Explanation
现在完成进行时:表示动作从过去开始一直持续到现在,这个动作可能刚结束,也可能还要继续下去,常与表示一段时间的状语连用,例如for two hours, since 1998, all this morning, these few days等。
Examples
1. I have been cleaning the room for three hours.
2. They haven't been reading,they have been writing.
3. Have you been living here since you got to China?
4. How long have you been collecting stamps?